258 ON A NEW GENtTS OF TUBNEBACE.&. 



multiparti ; placentae 3, 3-ovulat89, ovulis uniseriatis, funiculis 

 longiusculis insertse. Pedunculus fructiferus auctus, apice arete 

 incurvato. Fructus invertus, lsevis, p83iie ad basin debiscens. 

 Semina oblongo-obovoidea, in hilum subito contracta, curvata ; 

 testa reticulato-striata, striis elevatis ; arillus unilateralis semen 

 dimidium ajcpians, tenuiter membranaceus margine integro. 



H. setifebus, sp. unica. — Herba parva, raruosa; rami tereti, 

 hirsuti, pilis simplicibus adpressis. Folia alterna, inferne sparsa, 

 ad apices ramorum conferta, breviter petiolata, elliptica v. lan- 

 ceolato-elliptica, acutiuscula, crenato-serrulata, basi attenuata, 

 integra, eglandulosa, utrinque strigoso-birsuta. Flores solitarii 

 in axillis foliorum congestoram ad apices ramorum, erecti, breviter 

 pedunculati, 2 lin. longi ; pedunculo dense setoso pilis albidis. 

 Fructus 1| lin. longus, pedunculo fructifero 2i lin. longo. 



In insula Nossi-be, Madagascariensis ; Butenberg ! 



DESCRIPTION OE PLATE VII. 



Hyalocalyx setiferus, Rolfe, nov. gen. et sp. 



Pig. 1. Branch, of natural size. 



2. Unexpanded flower ; showing the short setose flowering peduncle and 



the peculiar setiform calycine appendages, X 4 diam. 



3. Bract removed, x 2 diam. 



4. Part of expanded flower ; showing the position and relative lengths of 



the parts (two of the stamens in each flower are a little longer than 

 the other three, but a little shorter than the styles *) ; x 4 diam. 



5. The delicate hyaline membranous calyx laid open ; showing the apical 



appendages and the insertion of the petals (a), and stamens (6), x 8 

 diam. 



6. Petal, X 8 diam. 



7. Stamen, x 16 diam. 



8. Ovary and styles, X 16 diam. 



9. Ovule with funiculus, X 16 diam. 



10. Fruit, showing the elongated curved setose fruiting peduncle with inverted 



capsule, X 8 diam. 



11. Capsule after dehiscence, showing the placentas and insertion of the 



seeds, x 4 diam. 



12. Seed, showing the reticulate-striate testa and the unilateral mem- 



branous arillus, x 8 diam. 



* The species will probably prove to be dimorphous, like many others in the 

 Order : in this case our specimen will represent the long-styled form. 



